<!DOCTYPE html>
<html>
  <head>
    <title>displaystyle</title>
    <meta charset="utf-8"/>
  </head>
  <body>

    <!-- Test the effect of displaystyle on munder, mover and munderover -->
    <math>
      <mstyle displaystyle="true">
        <munder><mo movablelimits="true">O</mo><mo>O</mo></munder>
        <mover><mo movablelimits="true">O</mo><mo>O</mo></mover>
        <munderover><mo movablelimits="true">O</mo><mo>O</mo><mo>O</mo></munderover>
      </mstyle>
      <mstyle displaystyle="false">
        <munder><mo movablelimits="true">O</mo><mo>O</mo></munder>
        <mover><mo movablelimits="true">O</mo><mo>O</mo></mover>
        <munderover><mo movablelimits="true">O</mo><mo>O</mo><mo>O</mo></munderover>
      </mstyle>
    </math>

  </body>
</html>
